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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5712) ViewFS should check the existence of the mapped namespace directories in the mount table
Date Thu, 02 Jan 2014 22:55:50 GMT
Brandon Li created HDFS-5712:
--------------------------------

             Summary: ViewFS should check the existence of the mapped namespace directories
in the mount table
                 Key: HDFS-5712
                 URL: https://issues.apache.org/jira/browse/HDFS-5712
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: federation
    Affects Versions: 3.0.0
            Reporter: Brandon Li


ViewFS doesn't validate the mount table mapping. Even the mapped directory on NameNode doesn't
exist, list directories or "dfs -ls"  command can still show the mapped directory.

This confuses users and applications when they try to create files under the mapped directories.
They will get file-not-exist error but viewfs shows the directory exists.

It would be less misleading if ViewFS can validate the  mount table and report found errors.



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